R. C. Vieira Ayres, S. A. Oliveira Emygdio Pereira, S. . Martins Nogueira Ávila, and W. . Valentim, “Acceptance in the PSF: humanization and solidarity: DOI: 10.15343/0104-7809.200630.2.11”, Mundo Saude, vol. 30, no. 2, pp. 306–311, Apr. 2006.